At the hospital they said his nerves were iron; there was no let-down after the day's work.
The only prudent thing for this rapid was a let-down and we went at it at once.
But what I object to most is the 'let-down' at the tag-end of each of these yarns.
The man in ermine reeled as if from some let-down of extreme tension.
Too many couples exploit the sense of let-down that marriage brings with it.
The let-down from the toil and excitement of the past months still held me.
After dinner four more rapids were put behind; we ran all but one at which we made a let-down.
Well, Mr. Coburn, you'll find it's going to be a let-down instead!
The Incroyable was a person of almost magical perceptiveness; he felt the let-down immediately and feared a failure.
The two weeks spent in crossing and recrossing had provided her with a let-down that had been almost jarring in its completeness.
Old English lætan "to allow to remain; let go, leave, depart from; leave undone; to allow; bequeath," also "to rent" (class VII strong verb; past tense let, past participle læten), from Proto-Germanic *letan (cf. Old Saxon latan, Old Frisian leta, Dutch laten, German lassen, Gothic letan "to leave, let"), from PIE *le- "to let go, slacken" (cf. Latin lassus "faint, weary," Lithuanian leisti "to let, to let loose;" see lenient). If that derivation is correct, the primary sense would be "let go through weariness, neglect."
Of blood, from late Old English. To let (something) slip originally (1520s) was a reference to hounds on a leash; figurative use from 1540s. To let (someone) off "allow to go unpunished" is from 1814. To let on "reveal, divulge" is from 1725; to let up "cease, stop" is from 1787. Let alone "not to mention" is from 1812.
"stoppage, obstruction" (obsolete unless in legal contracts), late 12c., from archaic verb letten "to hinder," from Old English lettan "hinder, delay," from Proto-Germanic *latjanan (cf. Old Saxon lettian "to hinder," Old Norse letja "to hold back," Old High German lezzen "to stop, check," Gothic latjan "to hinder, make late," Old English læt "sluggish, slow, late"); see late.